Hoont&trade; Electronic Dog Repellent and Trainer with LED Flashlight / Powerful Ultrasonic Dog Deterrent and Bark Stopper + Dog Trainer Device / Protect Yourself from Aggressive Dogs + Train Your Dog to Stop Barking and All Other Unwanted Behavior [NEW VERSION] PROTECT YOURSELF - The Hoont Electronic Dog Repellent emits a high-pitched ultrasonic sound that's inaudible to the human ear but highly irritating to dogs. Effectively stops barking and threatening dogs from up to 50 feet away. TRAINING AID - Deter unwanted behavior such as digging, chewing on furniture, jumping on guests, or barking. Dogs will learn to stop barking and all other unwanted behavior by associating disobeying with getting bombarded with this harmless sound. 100% HARMLESS TO DOGS & SAFE TO HUMANS  This device does not harm the dog. No liquid propellant is used; thus being the most humane way to protect yourself from aggressive dogs. Also never worry again of blowbacks or getting some liquid leaks onto your body. LED FLASHLIGHT & BATTERY POWER INDICATOR  Features a LED flashlight. Flashlight acts also as a battery indicator; know when its time to replace the battery, when the LED flashlight is weak its time to replace the battery. FITS IN POCKET - Protect yourself while walking, cycling, jogging, skateboarding, etc. with this handy device. The Hoont Electronic Dog Repellent is small, dimensions is only 4 inches x 2.5 inches, and fits comfortably into your pocket. / EFFECTIVE RANGE: Works up to 50 feet / Battery: 9-volt alkaline battery (Not included) / UPGRADED VERSION - IMPROVED STRENGTH